Kovič, and implicitly Ufnarovski and Åhlander, defined a notion of arithmetic par-tial derivative. We generalize the definition for rational numbers and study several arithmetic partial differential equations of the first and second order. For some equa- tions, we give a complete solution, and for others, we extend previously known results. For example, we determine under which conditions two consecutive partial derivations are commutative.
CITATION STYLE
Haukkanen, P., Merikoski, J. K., & Tossavainen, T. (2016). On arithmetic partial differential equations. Journal of Integer Sequences, 19(8).
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